Improved single-tree



V A. J. HANNA.

Whiffitree Hook.

No.-102,000. Patented April 19, 1870.

PETERS. Phalo-Lmm n hu. Wahi a'on. D. c.

dtniitml game zit-rut (9mm.

Letters Patent No. 102,000, dated April 19, 1870.

IMPROVED SINGLE-TREE.

The Schedule referred to in these Letters Patent and making pert of the same.

To all whom it may concern.-

Be it known that I, ANDREW J. HANNA, of New Garden Townsnip, in the county of Chester and State of Pennsylvania, have invented a new and improved Single-Tree; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being bad to the annexed drawings making a part of this specification, in which- Figure l is a front view of the machine embodying my invention.

Figure 2 is a plane view of the same.

Figure 3 is a view of the appliance, opened.

Figure 4 is a view-of the same with a different-shapedspring.

Nutm'e and Object of the Invention.

The nature of my invention consists in providing the ends of the single-tree with a dog operated by a spring and entering the hole in the end of the trace-iron.

The object of my invention is to provide a fastener to the trace-iron so that it can be readily opened and shot out of the way when the trace is being put in place, and readily forced back into the trace-iron, and

when in that position prevent the trace from slipping off. General Description.

0 Iain.

\Vhat I claim as my invention is- The employment ofa dog, catch, or trigger in combination with a spring, arranged and operating substantially as and for the purposes set forth.

ANDREW J. HANNA.

Witnesses:

J. S. VALENTINE, WM. B. Wreems. 

